[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.552607][ T23] audit: type=1800 audit(1575465781.293:25): pid=8109 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.572678][ T23] audit: type=1800 audit(1575465781.293:26): pid=8109 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.596008][ T23] audit: type=1800 audit(1575465781.293:27): pid=8109 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. 2019/12/04 13:23:12 fuzzer started 2019/12/04 13:23:14 dialing manager at 10.128.0.26:36481 2019/12/04 13:23:14 syscalls: 2691 2019/12/04 13:23:14 code coverage: enabled 2019/12/04 13:23:14 comparison tracing: enabled 2019/12/04 13:23:14 extra coverage: extra coverage is not supported by the kernel 2019/12/04 13:23:14 setuid sandbox: enabled 2019/12/04 13:23:14 namespace sandbox: enabled 2019/12/04 13:23:14 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 13:23:14 fault injection: enabled 2019/12/04 13:23:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 13:23:14 net packet injection: enabled 2019/12/04 13:23:14 net device setup: enabled 2019/12/04 13:23:14 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 13:23:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 13:23:15 executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000180)=@newlink={0x50, 0x10, 0x705, 0x0, 0x0, {}, [@IFLA_MASTER={0x8, 0x1b}, @IFLA_LINKINFO={0x28, 0x12, @veth={{0xc, 0x1, 'veth\x00'}, {0x18, 0x2, @VETH_INFO_PEER={0x14}}}}]}, 0x50}}, 0x0) 13:23:15 executing program 1: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) mount$bpf(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000180)='bpf\x00', 0x0, 0x0) mount$overlay(0x400000, &(0x7f0000000100)='./file0\x00', &(0x7f00000001c0)='overlay\x00', 0x0, &(0x7f0000000040)=ANY=[@ANYBLOB=',lowerdir=.:file0']) chdir(&(0x7f0000000300)='./file0\x00') r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getdents64(r0, 0x0, 0x0) syzkaller login: [ 57.771672][ T8271] IPVS: ftp: loaded support on port[0] = 21 [ 57.877004][ T8273] IPVS: ftp: loaded support on port[0] = 21 [ 57.943890][ T8271] chnl_net:caif_netlink_parms(): no params data found 13:23:15 executing program 2: r0 = gettid() r1 = openat$vhci(0xffffffffffffff9c, &(0x7f0000000340)='/dev/vhci\x00', 0x0) read(r1, &(0x7f00000001c0)=""/11, 0x349) timer_create(0x0, &(0x7f0000000080)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000100)) timer_settime(0x0, 0x0, &(0x7f0000000300)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) tkill(r0, 0x1000000000016) [ 58.042582][ T8271] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.050984][ T8271] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.070441][ T8271] device bridge_slave_0 entered promiscuous mode [ 58.091128][ T8271] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.098300][ T8271] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.121054][ T8271] device bridge_slave_1 entered promiscuous mode [ 58.181412][ T8271] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.199616][ T8277] IPVS: ftp: loaded support on port[0] = 21 [ 58.211225][ T8273] chnl_net:caif_netlink_parms(): no params data found [ 58.222977][ T8271] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 13:23:16 executing program 3: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r2, 0x10e, 0xc, &(0x7f0000000000)={0x4}, 0x10) write(r2, &(0x7f0000000080)="240000001a005f0014f9f407000904000a00000000000000000000000800110000000000", 0x24) [ 58.287106][ T8271] team0: Port device team_slave_0 added [ 58.320542][ T8273] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.327759][ T8273] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.340627][ T8273] device bridge_slave_0 entered promiscuous mode [ 58.362256][ T8271] team0: Port device team_slave_1 added [ 58.372689][ T8273] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.379735][ T8273] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.401066][ T8273] device bridge_slave_1 entered promiscuous mode [ 58.447494][ T8273] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.472465][ T8273] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 13:23:16 executing program 4: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)=[{&(0x7f00000000c0)="2e000000120081aee4050cecff0e00fa048b5bdb4cb904e473730e55cff26d1b0e0012800a00fff05e510befccd7", 0x2e}], 0x1, 0x0, 0x0, 0x88a8ffff00000000}, 0x0) [ 58.521945][ T8273] team0: Port device team_slave_0 added [ 58.595543][ T8271] device hsr_slave_0 entered promiscuous mode [ 58.640509][ T8271] device hsr_slave_1 entered promiscuous mode [ 58.694529][ T8279] IPVS: ftp: loaded support on port[0] = 21 [ 58.725445][ T8273] team0: Port device team_slave_1 added 13:23:16 executing program 5: r0 = openat$userio(0xffffffffffffff9c, &(0x7f0000000000)='/dev/userio\x00', 0x0, 0x0) readv(r0, &(0x7f00000002c0)=[{&(0x7f0000000180)=""/215, 0xd7}], 0x1) [ 58.814225][ T8273] device hsr_slave_0 entered promiscuous mode [ 58.880647][ T8273] device hsr_slave_1 entered promiscuous mode [ 58.920382][ T8273] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.953494][ T8281] IPVS: ftp: loaded support on port[0] = 21 [ 58.955718][ T8284] IPVS: ftp: loaded support on port[0] = 21 [ 59.002596][ T8277] chnl_net:caif_netlink_parms(): no params data found [ 59.017484][ T8271] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.084103][ T8271] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.153906][ T8271] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.225042][ T8271] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.339790][ T8277] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.347532][ T8277] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.355239][ T8277] device bridge_slave_0 entered promiscuous mode [ 59.364781][ T8277] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.372358][ T8277] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.380055][ T8277] device bridge_slave_1 entered promiscuous mode [ 59.387735][ T8273] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.444486][ T8273] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.513606][ T8273] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.563364][ T8273] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.658411][ T8277] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.693097][ T8277] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.715811][ T8277] team0: Port device team_slave_0 added [ 59.772006][ T8284] chnl_net:caif_netlink_parms(): no params data found [ 59.782647][ T8277] team0: Port device team_slave_1 added [ 59.793063][ T8271] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.807039][ T8281] chnl_net:caif_netlink_parms(): no params data found [ 59.848478][ T8279] chnl_net:caif_netlink_parms(): no params data found [ 59.924621][ T8277] device hsr_slave_0 entered promiscuous mode [ 59.990505][ T8277] device hsr_slave_1 entered promiscuous mode [ 60.030282][ T8277] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.064095][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.072454][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.084449][ T8281] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.092595][ T8281] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.104891][ T8281] device bridge_slave_0 entered promiscuous mode [ 60.116161][ T8281] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.124061][ T8281] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.131883][ T8281] device bridge_slave_1 entered promiscuous mode [ 60.154989][ T8271] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.178768][ T8279] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.186571][ T8279] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.197482][ T8279] device bridge_slave_0 entered promiscuous mode [ 60.213696][ T1101] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.222784][ T1101] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.231634][ T1101] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.238810][ T1101] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.246939][ T1101] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.256510][ T8284] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.266711][ T8284] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.274457][ T8284] device bridge_slave_0 entered promiscuous mode [ 60.287864][ T8279] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.295693][ T8279] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.304076][ T8279] device bridge_slave_1 entered promiscuous mode [ 60.330059][ T8284] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.337715][ T8284] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.346845][ T8284] device bridge_slave_1 entered promiscuous mode [ 60.355322][ T8281] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.366319][ T8279] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.387115][ T8277] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.437195][ T8277] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.492993][ T8281] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.504060][ T8279] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.519149][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.528134][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.537137][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.544197][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.555663][ T8273] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.568954][ T8277] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.618797][ T8281] team0: Port device team_slave_0 added [ 60.624946][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.645950][ T8273] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.655442][ T8284] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.664925][ T8277] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.725081][ T8279] team0: Port device team_slave_0 added [ 60.732535][ T8279] team0: Port device team_slave_1 added [ 60.739558][ T8281] team0: Port device team_slave_1 added [ 60.747095][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.760954][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.769999][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.778643][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.787115][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.795717][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.803775][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.811572][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.819760][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.828036][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.840529][ T8284] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.867452][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.876380][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.884979][ T8288] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.892084][ T8288] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.899852][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.908463][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.917029][ T8288] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.924108][ T8288] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.931733][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.940517][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.949023][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.958238][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.967113][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.032982][ T8279] device hsr_slave_0 entered promiscuous mode [ 61.070709][ T8279] device hsr_slave_1 entered promiscuous mode [ 61.110298][ T8279] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.125348][ T8284] team0: Port device team_slave_0 added [ 61.132620][ T8271] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.193162][ T8281] device hsr_slave_0 entered promiscuous mode [ 61.252250][ T8281] device hsr_slave_1 entered promiscuous mode [ 61.290355][ T8281] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.314335][ T8284] team0: Port device team_slave_1 added [ 61.330497][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.331082][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.347408][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.356277][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.364828][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.373521][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.382374][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.452954][ T8284] device hsr_slave_0 entered promiscuous mode [ 61.490698][ T8284] device hsr_slave_1 entered promiscuous mode [ 61.530827][ T8284] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.538434][ T8279] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 61.605854][ T8273] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.618359][ T8273] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.630092][ T8281] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.692843][ T8281] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.753886][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.762639][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.771291][ T8279] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 61.811928][ T8279] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.872778][ T8277] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.888764][ T8281] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.928178][ T8281] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.973396][ T8279] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.051812][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.059838][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.068099][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.075750][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.083644][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.091659][ T8289] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.100805][ T8277] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.117460][ T8271] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.127698][ T8273] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.143531][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.154157][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.163143][ T8288] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.170241][ T8288] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.193745][ T8284] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 62.246518][ T8284] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 62.302600][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.313043][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.322096][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.331704][ T8288] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.338925][ T8288] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.359306][ T8284] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 62.393620][ T8284] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 167.400120][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 167.407020][ C1] rcu: 1-...!: (10500 ticks this GP) idle=736/1/0x4000000000000002 softirq=10039/10043 fqs=39 [ 167.417574][ C1] (t=10500 jiffies g=6473 q=123) [ 167.422598][ C1] rcu: rcu_preempt kthread starved for 10422 jiffies! g6473 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 167.434808][ C1] rcu: RCU grace-period kthread stack dump: [ 167.440778][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 167.448664][ C1] Call Trace: [ 167.451954][ C1] __schedule+0x9a0/0xcc0 [ 167.456280][ C1] schedule+0x181/0x210 [ 167.460431][ C1] schedule_timeout+0x14f/0x240 [ 167.465267][ C1] ? run_local_timers+0x120/0x120 [ 167.470282][ C1] rcu_gp_kthread+0xed8/0x1770 [ 167.475039][ C1] kthread+0x332/0x350 [ 167.479090][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 167.484186][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.488851][ C1] ret_from_fork+0x24/0x30 [ 167.493266][ C1] NMI backtrace for cpu 1 [ 167.497611][ C1] CPU: 1 PID: 371 Comm: kworker/u4:5 Not tainted 5.4.0-syzkaller #0 [ 167.505570][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.515642][ C1] Workqueue: 0x0 (bat_events) [ 167.520476][ C1] Call Trace: [ 167.523764][ C1] [ 167.526602][ C1] dump_stack+0x1fb/0x318 [ 167.530921][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 167.535759][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 167.541899][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 167.547953][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 167.553920][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 167.559800][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 167.564902][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.570093][ C1] ? trace_hardirqs_off+0x74/0x80 [ 167.575106][ C1] update_process_times+0x12d/0x180 [ 167.580296][ C1] tick_sched_timer+0x263/0x420 [ 167.585132][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.590679][ C1] __hrtimer_run_queues+0x403/0x840 [ 167.595888][ C1] hrtimer_interrupt+0x38c/0xda0 [ 167.600839][ C1] ? debug_smp_processor_id+0x9/0x20 [ 167.606118][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 167.611655][ C1] apic_timer_interrupt+0xf/0x20 [ 167.616575][ C1] [ 167.619501][ C1] RIP: 0010:__memcg_kmem_uncharge+0xd/0x1a0 [ 167.625814][ C1] Code: 81 c3 08 02 00 00 48 89 df 4c 89 f6 e8 7c 87 ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 <50> 89 f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 38 4d 89 [ 167.645405][ C1] RSP: 0018:ffffc90002297bf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.654768][ C1] RAX: ffffffff81486ea4 RBX: ffffea000243cf80 RCX: ffff8880a8818600 [ 167.662729][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000243cf80 [ 167.670688][ C1] RBP: ffffc90002297c20 R08: 000000000003a728 R09: ffffed1015149a97 [ 167.678643][ C1] R10: ffffed1015149a97 R11: 0000000000000000 R12: ffff8880a7bcf720 [ 167.686600][ C1] R13: dffffc0000000000 R14: 1ffff11014f79ee4 R15: ffff8880a8a4d4a8 [ 167.694568][ C1] ? free_thread_stack+0x124/0x590 [ 167.699670][ C1] ? free_thread_stack+0x124/0x590 [ 167.704767][ C1] free_thread_stack+0x12e/0x590 [ 167.709690][ C1] put_task_stack+0xa3/0x130 [ 167.714289][ C1] finish_task_switch+0x3f1/0x550 [ 167.719313][ C1] __schedule+0x9a8/0xcc0 [ 167.723637][ C1] schedule+0x181/0x210 [ 167.730384][ C1] worker_thread+0x10d6/0x1630 [ 167.735171][ C1] kthread+0x332/0x350 [ 167.739398][ C1] ? rcu_lock_release+0x30/0x30 [ 167.744233][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.748808][ C1] ret_from_fork+0x24/0x30